Monumental structures containing at least one arched passageway and erected to honor an important person or to commemorate a significant event, particularly a victory in war. The basic form consisted of two piers connected by an arch, over which was placed a superstructure that served as a base for statues and bore commemorative inscriptions. Triumphal arches generally spanned a roadway used for triumphal processions. They are associated with ancient Roman architecture, however, they possibly developed elsewhere or from the Porta Triumphalis, which was a gate in Rome through which the victorious Roman army had to pass before entering the sacred city territory of Rome. "Arco onorario destinato a commemorare una vittoria militare. Nelle basiliche cristiane indica l'arco che divide la navata dal transetto o dal presbiterio."
